Finding the Fourth Proportional to 23,715.67, 32,728.28 and 13,105.97

Step by Step Solution

1. Step 1: Write the proportion equation
   23,715.67 : 32,728.28 = 13,105.97 : x
2. Step 2: Convert to fraction form
   23,715.67/32,728.28 = 13,105.97/x
3. Step 3: Cross multiply
   23,715.67x = 32,728.28 × 13,105.97
4. Step 4: Simplify right side
   23,715.67x = 428,935,855.83
5. Step 5: Solve for x
   x = 428,935,855.83/23,715.67
6. Step 6: Final answer
   x = 18,086.60